The "Extended Time-Geographic Framework Tools", User's Guide, and sample datasets have been updated for ArcGIS 10.0 - 8/17/2013
The Publication page has been updated. - 8/15/2013

Welcome to the web site of our research project: Towards a GIS-based Analytical Time-geographic Framework with Physical and Virtual Activities.
This project is sponsored by the U.S. National Science
Foundation (Grant No. 0616724) for a two-year period starting from August 1, 2006. Our
research team includes researchers from The University of
Tennessee, Knoxville and Oklahoma State University. The major goal of
this project is to extend Hägerstrand’s time geography
such that it can provide a comprehensive framework of
representing and modeling both physical and virtual activities
as well as the interactions between them. In addition, this
research will design a space-time geographic information
system (GIS) to implement the extended time-geographic
framework. This web site is
created and maintained by the research team to disseminate
and share research results and other information related to the
project. We welcome your comments and suggestions by
contacting us at the email addresses provided below.